LEVEL SWITCHES

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SWITCH MODULES

n switch elements, micro switches and proximity switches n SPDT and 2xSPDT n pneumatic with ON/OFF output n pneumatic with proportional output n aluminium and stainless steel housings n high and low temperature versions n IP 65 to IP 68 protection n explosion proof versionsn self lifting clamps for safe connections

FLANGE MODULES

n SS 1.4408 square flange, 92 mm pitch circle diameter (PCD) n DIN, ANSI, BS and JIS industrial flanges n special flanges with 98, 105 and 114 mm PCDn special stainless steel flanges n CS and stainless steel combination flanges n Hastelloy special flangesn DN 65 to 150, 3“ to 6“ n PN 16 to 315, class 150 to 2500 n flat seal, tongue and groove, ring joint etc.

FLOAT MODULES

n fixed switching distance of 12 mmn adjustable switching distance for pump control, vertical max. 2840 mm, horizontal max. 557 mmn Hastelloy and stainless steel floats n floats according to NACE n PP, PVDF and PTFE plastic floats n stainless steel versions up to 350 bar operating pressuren float modules for separation layer applications n stainless steel floats with polyamide and halar coating

Made possible by the 3 - modular concept:unlimited variety of switches

M O D U L E S

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01

02

03

04

05

06

07

08

09

10

11

12

13

14

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Customer specific solutions with money saving standard components

C O M B I N AT I O N S

01 with micro switches or proximity switches, also in explosion proof versions according to ATEX

02 pneumatic switching module with ON/OFF or proportional output

03 with heat exchanger for very high or low operating temperatures

04 in IP 68 protection for submersion applications

05 for applications requiring explosion proof versions according to ATEX

06 square standard flanges in stainless steel, 92 mm PCD

07 stainless steel and Hastelloy industrial flanges according to DIN, ANSI, BS and JIS

08 PP and PTFE industrial flanges according to DIN, ANSI, BS und JIS

09 with fixed switching distance

10 with rod extension for longer switching distances

11 rod extension for switch point correction

12 with bellow for dirty media

13 for pump control with adjustable switching distance

14 plastic versions for aggressive media

15 for separation layer surveillance of two media with varying gravity

SIDE MOUNT COMBINATIONS

TOP MOUNT COMBINATIONS

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Switch-, flange- and float

modules are selected

according to the process

parameters and the desired

functions. This offers

problem specific solutions

using standard components

and optimises the price/

performance ratio.

Alarm, measurement and controlwith Trimod Besta

A P P L I CAT I O N S A M P L E S

max/min limits pneumatic control pump and valve control

pump and valve control separation layer control external level control

high alarm

low alarm

max

min

pump off

pump on

pump off

pump on

high /

low alarm

high /

low alarm

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Ø 92

mm

92 mm

Reliable, user friendly and easy to integrate

H A N D L I N G

Trimod Besta level switches

feature a unique robustness.

They are easily handled

and quickly connected. Of

course, the lid and screws

can never be lost.

FASTER AND EASIER CONNECTIONS

The connection terminals have self lifting clamps. The optimized cable entry lets you connect the cables easily, quickly and in a professional manner.

CONFORMITY AND EXCHANGEABILITY

We offer our industrial and plastic ranges exclusively according to international DIN, ANSI, BS and JIS norms. The standard range is offered in the meanwhile world wide known square flange with 92 mm PCD. Because of that Besta switches can be mounted anywhere, anytime.

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The Trimod Besta standard range: versatile, robust and economical

S TA N DA R D S W I T C H E S

Trimod Besta, the flexible

one. It can be used

anywhere, no matter where

and when. Its versatility

is unlimited, for highest

temperatures, freezing cold,

low density, vacuum or high

pressure applications.

THE MOST SUCCESSFUL SWITCHES

Type A 01 041 alarm, limit and control functions

Nominal pressure PN 25 according to DIN Operating temperature 0 to 300 °CAmbient temperature 0 to 70 °CDensity of the liquid 0.7 kg/dm3

Switching distance 12 mm, fixedWetted materials stainless steelSwitch module material seawater resistant die cast aluminiumFlange square, 92 mm PCDSwitching element SPDT micro switchSwitching capacity 5 A / 250 VAC, 5 A / 30 VDCProtection IP 65Installation depth (tank) 226 mm

Similar Types

Type A 01 04 same as A 01 041, in addition, rod extensions G1, G2 and G3 can be used.

Type 5A 01 041 for aggressive environments, housing exclusively made of stainless steel.

Type 2A 01 041 with chromated switch housing

Type A 01 07 for low densities: 0.5 kg/dm3

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Type A 01 051 to A 01 054 with bellow for dirty media

Type A 01 051bellow Perbunan operating temperature 0 to 120 °C

Type A 01 052bellow Silicon operating temperature 0 to 200 °C

Type A 01 053bellow Viton® fluorelastomer operating temperature 10 to 200 °C

Type A 01 054bellow PTFE operating temperature 0 to 250 °C

Installation depth 253 mmother technical data same as A 01 041

Similar Types

Type A 01 051E15 special versions for waste water and waste tanks. Technical data similar to A 01 051.

FOR MANUALLY ADJUSTABLE SWITCHING DISTANCES

Type A 01 090 to A 01 093 ideal for dual control, for example, pump control

Type A 01 090adjustable switching distance 37 to 218 mm Type A 01 091adjustable switching distance 56 to 317 mm

Typ A 01 092adjustable switching distance 83 to 442 mm

Typ A 01 093adjustable switching distance 97 to 557 mm

Installation depth 278 to 561 mm, depending on on typeDensity of liquid min. 0.8 kg/dm3

other technical data same as A 01 041

Viton® is a registered trademark of DuPont Dow Elastomers

S TA N DA R D S W I T C H E S

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S TA N DA R D S W I T C H E S

PNEUMATIC SWITCHES AND CONTROLLERS

Type P 01 041 the pneumatic limit switch

Function 3/2 way valveRegulating air max. 10 barNominal pressure PN 25 according to DINOperating temperature 1 to 250 °CAmbient temperature 1 to 80 °CDensity of the liquid min. 0.7 kg/dm3

Switching distance 12 mm, fixedRegulating ports G 1/8“ (BSPP) IGWetted materials stainless steelSwitch module materials seawater resistant die cast aluminium

Options

Type 5P 01 041 exclusively made of stainless steelType FP 01 041 with letter of conformity for use in explosion-proof areas

Type M 01 041 the pneumatic controller

Function proportional controllerSupply pressure 1.4 barOutput signal 0.2 to 1 barNominal pressure PN 25 according to DINOperating pressure 1 to 250 °CAmbient temperature 1 to 80 °CDensity of the liquid min. 0.7 kg/dm3

Control range without rod: 30 mm with rod: up to max. 230 mmControl ports G 1/8“ (BSPP) IGWetted materials stainless steelSwitch module seawater resistant die cast aluminium

Options

Type 5M 01 041 exclusively made of stainless steelType FM 01 041 with letter of conformity for use in explosion-proof areas

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S TA N DA R D S W I T C H E S

VERTICAL SWITCHES

Type A 01 140 und A 01 141 for top mount installations

Function dual point controller (pump) or single point actuator Nominal pressure PN 16 according to DIN Operating temperature 0 to 300 °CAmbient temperature 0 to 70 °CDensity of the liquid n Pump control min. 0.45 kg/dm3

n Alarm min. 0.30 kg/dm3

Switching distance A 01 140: 12 to 1340 mm A 01 141: 12 to 2840 mmWetted materials stainless steelSwitch module material seawater resistant die cast aluminium Flange dimensions 92 mm PCDSwitching element SPDT micro switchSwitching capacity 5 A / 250 VAC, 5 A / 30 VDCProtection IP 65

ACCESSORIES

Type 2829.1 Counter flange for convenient mounting of level switches. Material: C22.8 The counter flange is welded directly onto the tank wall.

Type 2831.3 Counter flange for convenient mounting of level switches. Material: SS 1.4401 The counter flange is welded directly onto the tank wall.

Type 2382 Test actuator to simulate the switching function. Material: CrNi, O-ring: Viton ® The test actuator is mounted between the switch and the counter flange.

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The benefits of the wide

spectrum of Trimod Besta

switches are especially

obvious in the industrial

range. They are the best

choice for high operating

pressures, aggressive

media and high process

temperatures up to 400 °C.

A TYPICAL TRIMOD BESTA INDUSTRIAL SWITCH

Type A 22C 04 alarm, limit and control functions

Nominal pressure PN 40 according to DINOperating temperature 0 to 330 °CAmbient temperature 0 to 70 °C Density of the liquid min. 0.70 kg/dm3

Switching distance 12 mm, fixedWetted materials stainless steelLose flange CS zinc galvanized, yellow passivatedSwitch module material seawater resistant die cast aluminiumFlange DN 65, PN 40 according to DIN 2501Flange facing raised face type C, DIN 2526Switching element SPDT micro switchSwitching capacity 5 A / 250 VAC, 5 A / 30 VDCProtection IP 65Weight 5.4 kgInstallation depth 226 mm

The Trimod Besta industrial range forchallenging applications

I N D U S T R I A L S W I T C H E S

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All wetted materials are

made of high grade plastics

such as PP, PTFE or PVDF.

The limit switches are

available with DIN, ANSI, BS

and JIS industrial flanges.

A TYPICAL TRIMOD BESTA PLASTIC SWITCH

Type A 304 98 PTFE switch, alarm, limit and control functions

Nominal pressure PN 10 according to DINOperating temperature 0 to 200 °CAmbient temperature 0 to 70 °CDensity of the liquid min. 0.8 kg/dm3

Switching distance 12 mm, fixed Wetted materials PTFE with 25% glass fibre Lose flange CS zinc galvanized, yellow passivatedSwitch module material seawater resistant die cast aluminium Flange DN 80, PN 10 to DIN 2501Flange facing raised face type C, DIN 2526Switching element micro switch (SPDT)Switching capacity 5 A / 250 VAC, 5 A / 30 VDCProtection IP 65 Weight 5.4 kgInstallation depth (tank) 235 mm

The Trimod Besta plastic range forhigh aggressive media

P L A S T I C S W I T C H E S

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Trimod Besta limit switches

are successfully used in the

ship building industry since

1967. They are installed

in tankers, cruise ships,

submarines, even in the

fastest catamaran and the

strongest crane ship in the

world.

THE FAVOURITES

Type A 01 041 The allrounder

Nominal pressure PN 25 according to DIN Operating temperature 0 to 300 °C Ambient temperature 0 to 70 °C Density of the liquid 0.7 kg/dm3 Switching distance 12 mm, fixed Wetted materials stainless steel Switch module material seawater resistant die cast aluminium Flange square, 92 mm PCD Switching element SPDT micro switchSwitching capacity 5 A / 250 VAC, 5 A / 30 VDCProtection IP 65Installation depth (tank) 226 mm

Type U3A 01 041 Submersed type IP 68

Nominal pressure PN 25 according to DINOperating temperature -30 to +80 °CAmbient temperature -30 to +80 °CProtection IP 68, switch housing pressure tight up to 100 meters water columnCable length 3 m, or per requestCable type Neoprene (H07 RN-F)Other technical data same as A 01 041

Thousands of Trimod Besta switches ensurethe safe voyage of vessels on our oceans

S H I P B U I L D I N G

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R E G I S T R AT I O N S

Trimod Besta level switches

come with the required

shipping approvals and

registrations. See our

homepage for up to date

listings.

APPROVALS

1 American Bureau of Shipping, ABS 2 Bureau Veritas, BV 3 Det Norske Veritas, DNV 4 Germanischer Lloyd, GL 5 Lloyd‘s Register of Shipping, LRS 6 Registro Italiano Navale, RINA 7 Russian Maritime Register of Shipping, RMRS8 China Classification Society, CSS

Marine approvals and registrationsof Trimod Besta level switches

Cat Link V, the 91 meter

long catamaran of the Incat

Ship Yard in Australia. Its

transatlantic crossing at

an average speed of 41.28

knots set a new record.

Trimod Besta level switches AA 01 04 and AA 01 093 are used to limit and control levels on board.

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Thanks to high functional

safety and extreme

longevity, Trimod Besta

level switches are proven in

petro-chemical plants and on

offshore platforms.

Trimod Besta, whenever reliabilityis crucial

A TYPICAL INDUSTRIAL SWITCH FOR USE INEXPLOSION PROOF AREAS

Type ZK8 22C 041 pressure capsulated, alarm, limit and control functions

Type of protection EEx ed IIC T6 EU approval PTB 03 ATEX 1006 Nominal pressure PN 40 according to DIN Operating temperature -30 °C to max. 145 °C Ambient temperature according to EN 50014 Density of the liquid min. 0.7 kg/dm3 Switching distance 12 mm, fixedWetted materials stainless steel Lose flange CS zinc galvanized, yellow passivated Switch module material seawater resistant die cast aluminium Flange DN 65, PN 40 acc. to DIN 2501 Flange facing raised face type C, DIN 2626 Switching element SPDT micro switches Switching capacity 5 A / 220 VAC, 0.25 A / 250 VDC Protection IP 67

Registrations

Trimod Besta level switches are registered world wide for diverse applications.

P L A N T M A N U FAC T U R I N G

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WE DELIVER ACCURATE, TESTED AND PRE INSTALLED.

DOCUMENTATION AND SERVICES

n Works certificates according to EN 10204-2.2 n Test certificates according to EN 10204-3.1B/3.1C n Pressure test protocols n Detailed documentation: parts information with technical specifications and material data, including lot and charge information n Non-destructive testing: ultrasonic, x-ray and dye penetration testing n Mechanical testing: tension, notch and hardness tests n Base- and protective coatings

Trimod Besta limit switches in customized float chambers

Besta has many years of

experience concerning the

use of limit switches in float

chambers and containers.

We offer the following

approvals and services:

n Manufacturer Approvals

n Procedural Tests

n Welding Certificates

n DGR/PED Conformity

S E RV I C E S

A B C D

E F G H

Besta Ltd. Ackerstrasse 45 CH-8610 Uster SwitzerlandPhone +41 43 399 15 15 Fax +41 43 399 15 00 info@besta.ch www.besta.ch

Limit switches with electric, electronic and pneumatic switch elements. Numerous ship building approvals and registrations.

Opto-electronic level sensors for horizontal and vertical installation. Sensitivity adjustable via potentiometer.

Electronic limit switches for liquids and light weight solids, no calibration required.

2-wire electronic level transmitters with 4 - 20 mA output in 2-wire technology. With ATEX approval.

Besta GmbH Im Vogelsgesang 4 D-60488 Frankfurt an Main GermanyPhone +49 69 97 66 020 Fax +49 69 76 81 470 info@bestagmbh.de www.bestagmbh.de

Homepage

Find your local sales and service partner under www.besta.ch

Quality Management

The Besta Ltd. quality management system according to ISO 9001 has been established in 1991.

Registered Trade Marks

Trimod and Besta are registered trade marks of Besta Ltd., Switzerland.

Technical specifications are for information only and may change without notice.Catalogue no. LTF01E/10.04